Yea, Not sayin thats your issue but after reading this I thought I would throw it out there. And again, they were great and stable for months.That's weird. Like I said my install was going strong for a solid 12 months. My Father has an identical system that I installed back in December of 2020. He had his house pre-wired while it was being built, that's the only difference. However the installers didn't use CAT6. They used CAT5 probably, from what I remember. Smaller diameter wire and no solid core copper. He hasn't had one failure while whole time. And I crimped all of his connections by hand WITHOUT having any sort of continuity tester at the time, and got everything working the very first try. Not bad for a first timer. The success of his system is what led me to procure the same exact model everything in 2021.